A238839 List of Coxeter numbers of the 24 even unimodular lattices in dimension 24.

0, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 10, 12, 12, 13, 14, 16, 18, 18, 22, 25, 30, 30, 46

Offset: 1

Author

N. J. A. Sloane, Mar 18 2014

Keywords

• nonn
• fini
• full

Comments

These lattices consist of the Leech lattice and the 23 Niemeier lattices.

Links

• J. H. Conway and N. J. A. Sloane, Sphere Packings, Lattices and Groups, 3rd. ed., 1993. Table 16.1, p. 407.
• Hans-Volker Niemeier, Definite quadratische Formen der Dimension 24 und Diskriminante 1, J. Number Theory 5 (1973), 142--178. MR0316384 (47 #4931).

Crossrefs

A239048 is a subsequence.